Kid Wiz (A Step to Know the World)
Class-VII
Publication Division D.A.V. College Managing Committee Chitra Gupta Road, New Delhi-110055
CONTENTS Art & Culture
Language & Literature Mind Power Which 'City' Are You In? It's Never Too Late! Maze of Words Indian Roots Quotable Quotes Variant Verbs Writings of Great Men Pertinent Proverbs Animal Expressions What's the Word? Valuable Values Fact File Test Your Wisdom
Fairs of India Rock and Roll Jewellery Section Folk Theatre Street Food Theatre Personality World of Fashion Festivals and Celebrations Tribal Talk Traditional Costumes Awards and Accolades Best Indian Brand Slogans Fact File Test Your Wisdom
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Math Magic
Environment Around
Tricks with Figures 63 Networking 64 Hunt the Hidden Figures 65 Matchstick Puzzles 67 What Comes Next? 68 Magic Squares 69 Missing Numbers 71 Guess the Shape 73 Know Your Measure 74 International Shopping 75 Scratch Your Head 76 Formulae Can Be Fun 77 Fact File 78 Test Your Wisdom 79
Environs 17 Steps to Fame 18 Gadgets Galore 19 Endangered Birds 20 An Atmosphere of 'Spheres' 21 Blasting into Space 22 Explore the Sciences 24 Dreaded Diseases 25 Way to Health 26 World's Toppers 27 Electronic Brain Game 28 Buzz Zone 29 Fact File 30 Test Your Wisdom 31
Sports & Games
World Around Canals of the World Globe Trekker Dates and Events Island Quiz National Anthem/Song (World) Important Border Lines Countries and Their Parliaments Emperors and Kings Natural Features Famous Parks Mountain Passes Famous Bridges Fact File Test Your Wisdom
33 34 35 36 37 38 39 40 41 42 43 44 45 46
48 49 50 51 52 53 54 55 56 57 58 59 60 61
Check-Mate 81 Terrific Tennis 82 Indian Tennis Stars 83 The Game of Skill 84 Our National Game 85 Our Hockey Stars 86 Yoga — The Spirit of Life 87 The Everest Story 88 Adventure Sports 90 The Carrom Connection 92 Basketball is the Best 93 International Stadiums 94 Fact File 95 Test Your Wisdom 96 Answers 98
Language & Literature
Mind Power
Put your ‘mind over matters’. Read carefully and use the following expressions in the given sentences. EXPRESSIONS
a.
two minds
b.
in the mind
c.
mind_tongue
d.
mindful
e.
mindless
f.
out of_mind
g.
not mind
h.
make up_mind
i.
on_mind
j.
mind you
1. How can you go out in this heat? You must be ____________ your ____________. 2. Please hurry up and ____________ your ____________ about what you want to do. 3. I am very busy. I have a lot ____________ my ____________. 4. Please do ____________ as I have to leave the party now. 5. ____________, all that you say can be used against you in the court. 6. ____________ your ____________, think before you speak! 7. I am in __________________, to go to the US or to Australia! 8. It is all ___________________, so try to be strong. 9. ____________ of all the work he was doing, his boss gave him a promotion. 10. ____________ of all the harm he would cause, the woodcutter cut down the tree.
I Don’t have a Mind to Mind. Do You Mind?
1
Language & Literature
Which 'City' Are You In?
The suffix 'city' forms some powerful Abstract Nouns that express a quality in brief. Try to build some 'city' words using the following hints. First one is done for you. e l a s t i c i t y
1.
elastic or stretchable
2.
the quality of being simple
3.
scarce or less in supply
city
4.
wise or sagacious
city
5.
ratio of distance and speed
city
6.
vivacious or full of life
city
7.
quality of being bold or audacious
city
8.
ability to hold or store
city
9.
toxic or poisonous
city
10.
to make it public or open
city
city
L
A
S
E
T I C
2
I
T
Y
Language & Literature
It's Never Too Late!
True indeed, it is never late to recapitulate all the vocabulary words. Better 'late' than never! So start off using the following hints. l a t e
1. fill in air 2. to tell
l a t e l a t e
3. move like a pendulum 4. to feel very happy
l a t e l a t e
5. to express in a formula
l a t e
6. to use to one's own advantage 7. a dish for serving food
l a t e l a t e
8. to specify or lay down time
l a t e
9. to arrange in proper sequence
l
10. to keep changing one's mind
3
l a t e
Language & Literature
Maze of Words
Our speech has words that express our feelings in various ways. Given below are some words. Their synonyms are hidden in the maze. Find them from the maze and write in the space provided. One is done for you. a
g
a
t
a
l
k
a
b
a
n
b
a
r
a
o
b
s
t
r
u
c
t
b
g
o
s
s
i
p
b
n
g
l
o
w
a
w
a
b
b
b
b
o
a
b
b
b
a
c
o
n
c
e
n
t
r
a
t
e
i
b
g
l
e
a
m
i
h
b
b
b
m
b
a
b
a
a
a
c
i
s
b
p
p
r
o
m
o
t
e
e
n
h
a
o
r
e
f
l
e
c
t
b
d
i
a
n
o
b
s
e
r
v
e
b
e
n
a
d
v
b
e
b
l
o
c
k
r
e
a
e
e
b
e
x
p
r
e
s
s
a
a
r
1. develop
grow _____________ _____________ _____________
2. speak
_____________ _____________ _____________
3. think
_____________ _____________ _____________
4. twinkle
_____________ _____________ _____________
5. look
_____________ _____________ _____________
6. stop
_____________ _____________ _____________
4
Language & Literature
Indian Roots
Many Indian words are used in English and there is no denying that they have acquired great importance in English language. Read the given hints and then unscramble the letters to get the correct Indian word. 1. an officer
ahsib
2. work or duty
armka
3. an expert or a spiritual leader
uugr
4. a spicy Indian dish
urrcy
5. a poor man (may be religious)
akfir
6. oven for roasting raw food
andtoor
7. a sure formula for success
aamntr
8. salvation or freedom of soul from suffering
oksmha
9. a scholar or a priest
tinupd
10. system of exercises based on Hindu philosophy.
DO YOU KNOW? Mahatma Gandhi, the ‘Father of the Nation’, used impressionable words like 'ahimsa', 'satya', 'swaraj' which have found a permanent place in English language.
5
agyo
Quotable Quotes
Language & Literature
The famous quotes of great men leave an everlasting impression on our minds. Here are some unforgettable words. Ponder upon them and guess who could have said them. Take help from the Help Box. 1.
Genius is one per cent inspiration and ninety nine per cent perspiration.
2.
The child is the father of man.
3.
Some books are to be tasted, others to be swallowed and a few to be chewed and digested.
4.
A thing of beauty is a joy forever.
5.
Early to bed and early to rise, makes a man healthy, wealthy and wise.
6.
Whatever you are, be a good one.
7.
Be the change you want to see in the world.
8.
It’s our choices that show what we truly are, far more than our abilities.
9.
It’s fine to celebrate success, but it’s more important to heed the lessons of failure.
10.
We did not come here to fear the future, we came to shape it.
Help Box Mahatma Gandhi
Abraham Lincoln
J. K. Rowling
Bill Gates
Barack Obama
Francis Bacon
Benjamin Franklin
Thomas Edison
William Wordsworth
John Keats 6
Language & Literature
Variant Verbs
A. A ‘verb’ is the life and soul of a sentence. Verbs have a great variety of usage, according to the different situations. Try your hand at joining the verbs with proper objects given in the Help Box.
Verbs
Objects
1. Solve
a
2. Compose
a
3. Frame
a
4. Strike
a
5. Appear
in an
6. Conduct
an
7. Regulate
the
8. Verify
a
Help Box orchestra
mystery
song
traffic
picture
pose
examination
statement
B. Unscramble the given letters and write the correct word in the space provided. You will find that all these are verbs. 1.
_______________ a crime
2.
_______________ a tantrum
hotrw
3.
_______________ a plan
evidse
4.
_______________ a knot
eit
5.
_______________ a secret
peke
6.
_______________ a file
opcy
omcimt
7
Writings of Great Men
Language & Literature
Many great men have penned down immortal works sharing their invaluable experiences. Here are some very well-known titles of books. Use the Help Box to write the correct name of the authors against the books written. Books
Authors
1. Train to Pakistan
___________________________
2. The Home and the World
___________________________
3. Playing It My Way
___________________________
4. My Country My Life
___________________________
5. Wings of Fire
___________________________
6. Business @ The Speed of Thought
___________________________
7. The Boy Billionaire
___________________________
8. The Blue Umbrella
___________________________
9. Making India Awesome
___________________________
10. Immortals of Meluha
___________________________
Help Box Sachin Tendulkar Chetan Bhagat Amish Tripathi
Mark Zuckerberg Khushwant Singh
Rabindranath Tagore L.K. Advani Ruskin Bond
APJ Kalam Bill Gates
DO YOU KNOW? Sahitya Academy, set up by Government of India on March 12, 1954, co-ordinates all literary activities of Indian languages. It works actively for the development of high literary standards. It awards Indian authors for their outstanding books in major Indian languages. 'Bhasha Samman' and 'Translation Prizes' are also given to the deserving contributors.
8
Language & Literature
Pertinent Proverbs
The proverbs have always provided valuable advice. Their message holds true for both the young and the old. Read the incomplete proverbs and match them with their correct endings. 1.
Cleanliness is _______
a.
the tough get going.
2.
Hope for the best but _______
b.
mightier than the sword.
3.
Fortune favours _______
c.
there is a way.
4.
When the going gets tough ______
d.
wait for no one.
5.
The pen is _______
e.
be prepared for the worst.
6.
Better late _______
f.
like the present.
7.
A picture is worth _______
g.
louder than words.
8.
There is no place _______
h.
like home.
9.
Actions speak _______
i.
is next to godliness.
10.
There is no time _______
j.
the brave.
11.
Where there is a will _______
k.
than never.
12.
Time and tide _______
l.
a thousand words.
9
Animal Expressions
Language & Literature
The animal expressions are often used for real-life situations. Here are given some animal expressions. Match them correctly with their true meanings. 1.
2.
a bull in a China shop
a.
a snake in grass
b. a stupid person not knowing the true value of things.
3.
a dark horse
4.
a wild goose chase
5.
pearls before a swine
6.
at a snail's pace
7.
c.
moving very slowly.
a cunning person among innocents.
d. cleverly hidden. e.
one who brings bad name to his family, etc.
f.
a great bundle of troubles and problems.
cat among pigeons
g.
one who destroys things.
8.
hornet's nest
h. chasing with determination and speed.
9.
horse sense
10. lion's den
i.
a place of the powerful person.
j.
common sense.
10
Language & Literature
What's the Word?
People are often identified and known for their peculiar habits, behaviours or characteristics. Choose and write, one word for the people with the given characteristics, using the Help Box. 1. an ambitious and a successful person 2. a lazy person who loves watching the TV 3. a skilful young person 4. a person or an expert obsessed with something 5. an organiser of commercial enterprise involving risk 6. a person who is addicted to the computer 7. a person having extreme opinion or obsession about religious beliefs, etc. 8. a person who is an expert at business deals 9. a 'duplicate' who is made genetically similar 10. a person who traps animals illegally
Help Box wheeler dealer couch potato geek
whiz kid fanatic
computer bug poacher clone
entrepreneur high-flyer
DO YOU KNOW? Mnemonic is a tool to help remember facts or large amount of information. It can be in form of a song, rhyme, phrase, etc., to list the facts in certain order. For example– RICE – It explains how to treat a sprain as – Rest injured area, Ice the sprain, Compress with bandage and Elevate the injured area.
Activity
Find some mnemonics or invent them yourself.
11
Language & Literature
Valuable Values
Read the following situations and write the values displayed. 1. The students of Class-VII saluted the national flag and pledged to do their best for their country. P ___ ___ ___ ___ ___ ___ ___ ___ M
2. Every day, before going home, the students switch off the lights and fans. E ___ ___ ___ ___ Y
C ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ N
3. The students enjoyed celebrating their 'Annual Day' with traditional songs and dances from different states of India. U ___ ___ ___ Y
I ___
D ___ ___ ___ ___ ___ ___ ___ Y
4. The students always ensure that water taps are closed after use, specially during the recess time. W ___ ___ ___ R
5.
C ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ N
The monitor of the class stopped his/her classmates from tearing paper and making paper balls or aeroplanes. S ___ ___ E
6.
P ___ ___ ___ R
The students prepared a time-table, allocating proper time for each subject in order to revise thoroughly for their exams. T ___ ___ E
M ___ ___ ___ ___ ___ ___ ___ ___ T
7. The Headboy and the Headgirl of the school led the students' rally around the neighbouring areas about 'clean city – green city'. L ___ ___ ___ ___ ___ ___ ___ ___ P
8.
All the students of Class-VII, gathered in the school garden and helped the teachers to distribute the important circular for the school function. C o - O ___ ___ ___ ___ ___ ___ ___ N
12
Language & Literature
Fact File R. K. Narayan
(10 October 1906 – 13 May 2001) Rasipuram Krishnaswami Iyer Narayanswami – R. K. Narayan was a renowned author. He was born in Chennai. His father was a school headmaster. He spent a lot of his childhood time with his grandmother enjoying listening to her stories. He was an avid reader and his favourite authors were - Charles Dickens, A. C. Doyle, Thomas Hardy, etc. In 1926, he completed his studies at school and then joined the Maharaja College, Mysore. He worked as a school teacher for a while and then took up writing as a profession. He wrote stories, which were illustrated by his famous brother, R. K. Laxman; and were published in The Hindu. His stories are widely read and appreciated for their simple and interesting narration. He wrote his first novel, Swami and His Friends, in 1930 and created an imaginary town of 'Malgudi'. This novel was published in 1935 on the recommendation of his friend, Graham Greene. His other famous novels are – Bachelor of Arts, The Dark Room, The English Teacher and Malgudi Days (Collection of Short Stories). In 1958, his novel, The Guide, became very popular and was later made into a major hit film. An Indian television serial Malgudi Days was also based on his famous novel. He received 'Padma Bhushan' in 1964, 'Sahitya Academy' Award in 1958, A C Benson Medal for Journalism in 1980. He was nominated as a member to the Rajya Sabha.
13
Language & Literature
Test Your Wisdom 1. The authors of the following books have been mis-matched. Write them correctly. a.
b.
R.K. Narayan
Chetan Bhagat
2.
c.
d.
Khushwant Singh
e.
Bill Gates
APJ Kalam
Fill in the crossword with the help of clues given— Across
H
6
1. A skilful young person –
W
2. One who traps animals illegally –
P
2
3. A person with extreme opinion –
3
4. A genetically similar living being – 5. A person addicted to computer –
D
1
C
4
C
5
Down 6. A successful person with ambition –
14
F
E
R
R
C
G
Language & Literature
3.
Write the meanings of the following: mantra
______________________________________________________
b. fakir
______________________________________________________
guru
______________________________________________________
d. moksha
______________________________________________________
a.
c.
e.
karma
______________________________________________________
f.
pundit
______________________________________________________
4. Explain the following: a.
5.
At a snail's pace
_________________________________________
b. A dark horse
_________________________________________
c.
_________________________________________
Hornet's nest
d. A bull in a China shop
_________________________________________
e.
A cat among pigeons
_________________________________________
f.
Lion's den
_________________________________________
Complete the following with suitable words. a.
My father is a calm person. He is always as cool as ______________
b.
My friend could not complete his work on time. He was as slow as ___________
c.
The Managing Director of the company is always as busy as ______________
d. After my exams, I felt as free as ______________ e.
On seeing the policeman, the thief ran as quick as ______________
f.
The water in the swimming pool was as clear as ______________
15
Language & Literature
6.
Write the words starting with ‘ph’ using the hints. a.
7.
p h
a fear is a
b. a ghost is a
p h
c.
an expression is a
p h
d. body structure is called
p h
e.
a picture taken with camera
p h
f.
a copy of a document
p h
Use double letter words and the hints to form the answers. a.
t t
opposite of sweet
t t
b. to praise in excess c.
t t
spoiled, decaying
d. hand-gloves for small children
t t
e.
opposite of a loser
n n
f.
an entrance or route
s s
16
s
Environment Around
Environs
Given below are the abbreviations related to environment. Write their full form using the Help Box given. 1. AAQ
___________________________________
2. ACF
___________________________________
3. BOH
___________________________________
4. CFC
___________________________________
5. DAD
___________________________________
6. HAP
___________________________________
7. IRAP
___________________________________
8. QA ___________________________________
Help Box Board of Health
Advanced Air Quality
Chlorofluorocarbon
Activated Carbon Filter
Dead and Decomposing
Hazardous Air Pollutant
Immediate Response Action Plan
Quality Assurance 17
Environment Around
Steps to Fame
Given below are the brief descriptions taken from the great works of some famous scientists. Read them carefully. Use the Help Box to name the scientist. 1. He was the first to produce electricity by hanging a dead frog on the iron railings with copper hooks.
________________ G
2. He was inspired by a swinging church lamp which lead to the invention of pendulum clock.
________________ G
3. He accidentally spilled some rubber, sulphur and lead onto a stove resulting in rubber, resistant to heat and cold.
________________ C
4.
He made the greatest discovery by growing peas and formulated the laws of hereditary, i.e. passing on of characters from one generation to another.
________________ M
5. He made a famous discovery while being in his bath tub and gave the famous principle.
________________ A
6. He, while trying to make a better refrigerator, accidentally invented teflon, that is used in 'Non stick' utensils.
________________ R
7.
He made the discovery after learning about night writing which proved a boon to the blind.
L________________
8. He accidentally discovered sweetner when he forgot to wash his hands before lunch after working in Johns Hopkins lab.
________________ C
9. He observed the blacksmith at work and came out with a musical scale using different sized hammers.
________________ P
10. He was a navy radar specialist who felt that the chocalate bar in his pocket started melting in front of microwave emitters and this lead to the invention of microwave.
________________ P
Help Box Louis Braille Pythogoras Archimedes
Charles Good Year Roy Plunkett
Pency Spencer Galileo Mendel Galvani Constantine Fahlberg
DO YOU KNOW? Night writing is a method of sending secret messages by punching dot marks on thick papers which can be read by people in dark with their finger tips.
18
Environment Around
Gadgets Galore
Many scientific devices and gadgets have been invented which help us to make accurate measurements. Read the information given below and unscramble the letters to find out some of these gadgets. Clue: Most of these gadgets end with 'meter'. 1. It is used for measuring long distances accurately.
_____________________________
ERDOMGEEIT
2. It is used for measuring electric current.
EMMTREA
_____________________________
3. It is used for measuring atmospheric pressure.
MBEAETROR
_____________________________
4. It is used for measuring small amount of electric current.
_____________________________
5.
It is used to measure the amount of water vapour in the air.
_____________________________
AEGMLOVNTAER MHRYOGETER
6. It is used to detect the presence of impurities in milk.
EMOTTCALER
_____________________________
7. It is used for measuring magnitude and direction of a magnetic field.
RMTMAEGNTEEO
_____________________________
8. It is used to measure the wind speed. _____________________________
TMOAMNEEER
9. It is used to find the radius of a sphere and to find the exact measurement of the thickness of small bodies. _____________________________ 10. It is an instrument used for measuring very small distances or dimensions. _____________________________
HEMRSOPTERE
IMOEMTCRER
DO YOU KNOW? The instrument used for measuring blood pressure is called Sphygmanometer.
19
Endangered Birds
Environment Around
Given below are the pictures of some endangered birds of India. Identify them and write their names using the Help Box. 1.
2.
3.
4.
5.
6.
Help Box Sarus Crane Forest Owlet
Oriental Stork Long billed Vulture 20
Bengal Florican Himalayan Quail
Environment Around
An Atmosphere of 'Spheres'
There are many words in scientific vocabulary which end with 'sphere' although they have no link with the spherical shape. Given below are the clues which describe these 'sphere' ending words. Use the Help Box and write the correct word for each description given. 1. An imaginary line, called equator, divides the earth into two halves.
_______________________________
Hemispheres
_______________________________
Lithosphere
3. A spherical strong steel vessel used for deep sea observation.
Troposphere
_______________________________
4. A layer of atmosphere extending 1000 km above the surface of the earth which reflects radiowaves.
Hydrosphere Biosphere
2. The waters of earth's surface.
Help Box
_______________________________
Asthenosphere Bathysphere Ionosphere
5. The upper layer of the earth's mantle, whose capacity for gradual flow is thought to give rise to continental drift.
_______________________________
6. The regions of the earth's crust and atmosphere occupied by living organisms.
_______________________________
7. The crust of the earth.
_______________________________
DO YOU KNOW?
8. The layer of atmosphere nearest the earth in which weather changes occur.
_______________________________
21
The thin hydrogen layer above the visible surface of the sun, known as Chromosphere, has the temperature of about 1000° Celsius.
Environment Around
Blasting into Space
Outerspace has always fascinated man. With the advancement in science, man can even go into the space shuttles and space crafts. Solve the following crossword puzzle, with the help of clues, to have a better understanding of space and space vehicles. C
10
C
7
8
S
A
11
O
2
9
S
G
3
1
H
12
4 5
C
C
F
S
14
13 6
V
L
22
G
H
15
Environment Around
Clues: Across 1. It is exerted by the earth which makes getting into space difficult. 2. A small sealed and pressurised cabin, with an acceptable environment, often used for sending men or animals into space. 3. It is known to be the most dangerous hazard in space flight. 4. It is in front of the orbiter in a space shuttle where the crew members work and live. 5. It is detachable compartment of a space craft. 6. A device designed to supply and hold a missile in position for firing. Down 7. This space shuttle got disintegrated into pieces while re-entering the earth's atmosphere on 1 February 2003. 8. A garment designed to allow an astronaut to survive in space. 9. This is the biggest rocket ever built. 10. It is a check up time before a space craft is launched from the earth. 11. On successful re-entry into the earth's atmosphere, the orbiter flies like an ................. 12. This is the powerful space telescope launched by America in 1990. 13. It is the fuel used in the rockets, set off by Chinese soldiers, about 700 years ago. 14. It is a space craft, sent on missions, to study various bodies in the solar system. 15. It is used as a fuel along with liquid oxygen in a space shuttle.
23
Explore the Sciences
Environment Around
There are different branches of science dealing with different fields. Read the given descriptions carefully and unjumble the letters to get the correct answer. 1. Science concerning the study of movement of objects through air.
ANEOARUTCIS
______________________
2. Science governing travel in space. 3.
ATSORANUITCS
______________________
Science that deals with the study of spread of disease in a large population. EIPEMDIOOLGY
______________________
4. Science that deals with the possibility of life outside the earth.
EOXIBOOLGY
______________________
5. Biological science which deals with the study of structure of tissues.
OLOSIGYHT
______________________
6. Science and technology that deals with making and working of different types of robots.
TBOROICS
______________________
7. Science which deals with occurence, location and properties of earthquakes.
OEISMSLGOY
______________________
8. Science which deals with the study related to efficient use of human energy.
MICSEGRONO
______________________
9. Science that deals with the causation of a disease.
GLOYTIE
______________________
10. Science which deals with passing on of characters from parents to their offsprings.
ENEGTCIS
24
______________________
Environment Around
Dreaded Diseases
Health is wealth but sickness is a curse. Good health is necessary for our purposeful existence in the world. Given below are the descriptions of some diseases affecting a particular part of the body. Using the Help Box, find and write the names of the diseases in the space provided. 1 It is a disease in which the 2 patient cannot distinguish between red and green colour.
It is a disease affecting brain causing problems with memory, thinking and behaviour.
3 In this disease, there is bleeding from swollen gums which leads to loosening of teeth.
It is a disease that 8 makes bones easy to break.
4
Help Box Severe Acute Respiratory Syndrome (SARS) Athlete's foot Osteoporosis Myopathy Alzheimer Colour Blindness Yellow Fever Pyorrhoea
In this disease, upper respiratory tract is affected and initial symptoms indicate common cold, sore throat and high fever.
5 It is a viral disease with fever and jaundice, transmitted by mosquito and is often fatal. 6 It is a disease in which muscles become weak. 7
It is a fungal foot condition affecting the skin between the toes.
1. ___________________________
5. ___________________________
2. ___________________________
6. ___________________________
3. ___________________________
7. ___________________________
4. ___________________________
8. ___________________________
25
Environment Around
Way to Health
A balanced diet contains all the nutrients in appropriate quantity that our body requires. Given below are some rich sources of food. Choose and write the correct components from the Help Box for these sources. One is done for you. Sources
Components
1. Yellow vegetables, green leafy vegetables, tomatoes, butter, egg yolk
Vitamin A
2. Cereals, beans, lentils, vegetable leaves, spinach, apple, dried peach, pomegranate, jaggery 3. Yeast, soyabean, germinated pulses and cereals, milk, enriched flours 4. Butter, ghee, oil, margarine 5. Salad, whole grains and cereals, green leafy vegetables 6. Common salt, sea foods 7. Common salt, meat, fish, poultry, egg, milk
Help Box Fats
Sodium
Iodine
Roughage 26
Vitamin B
Vitamin A
Iron
Environment Around
World's Toppers
Given below are the extraordinary features of some animals. Read these features carefully and write the name of the animal using the Help Box. 1. A long arm animal. 2. The strongest animal. 3. The loudest voice animal on land. 4. The largest brain animal in proportion to its body. 5. The venomous animal. 6. The largest carnivore. 7. The longest jumper. 8. The animal with longest period of hibernation. 9. The smallest mammal. 10. The largest ape.
Howler Monkey
Snow Leopard
Rhinoceros Beetle
Help Box Rhinoceros Beetle Gibbon Gorilla Snow Leopard Single Box Jelly Fish
Marmot
Ant Howler Monkey Marmot Adultbumblebee Southern Elephant Seal 27
Electronic Brain Game
Environment Around
Computers have captured almost every field of life. They have made our life comfortable with their amazing speed, reliability and accuracy. Fill in the blanks using the words given in the Help Box. 1. A _____________________ is a small, portable, round medium used for recording, storing, and playing back audio, video, text, and other information in digital form. 2. RAM, ROM and ___________ are the three kinds of memories of computer. 3. The engineers who developed IBM PC were known as _____________________. 4. ___________ is the brain of a home computer. 5. Through ___________ we are able to draw interesting pictures. 6. _______________, originally, was a printed bookseller company, now sells more e-books than printed ones. 7. ___________ is a skilled computer user that accesses others’ mail. 8. ___________ was the first popular web browser which was released in 1993. 9. A computer dedicated to sending and receiving faxes for a group of networked computers is known as ___________. 10. ___________ was the first electronic and commercial digital computer which can perform calculations at high speed.
DO YOU KNOW? Sweden has the highest percentage of Internet users, i.e. 75 per cent.
Help Box ENIAC
CPU
Hacker
Dirty Dozen
Compact Disc (CD)
Amazon
LOGO
Storage
Fax Server
Mosaic
28
Environment Around
Buzz Zone
Sounds in our environment produce both good and bad effects. Fill in the following blanks using the words given in the Help Box. 1. Sound made by a movement backwards and forwards is called __________________ . 2. The number of times a sound vibrates in one second is called its _________________ . 3. Frequency of a sound measured in units is called ___________ . 4. Sounds which have a frequency of over 20,000 Hz are called _______________ . 5. When a loud sound bounces off a hard surface in an enclosed space, it makes an ___________ . 6.
Aircraft that goes faster than the speed of sound are called __________________ .
7. The loudness of sound is measured in units called _____________________ . 8. Sounds ________________ 100 decibels can damage the ear. 9. ___________ is the degree of highness or lowness of a tone. 10. Any sound that is unpleasant to a person is ___________________ .
Help Box noise supersonic
echo greater than
decibles pitch 29
hertz frequency
vibrations ultrasonic
Environment Around
Fact File Dolphins Dolphins are mammals, which can swim up to 260 m below the surface of the ocean.
Dolphins can stay 15 minutes under water but they cannot breathe there. They can also jump as high as 20 feet out of the water.
Dolphins are extraordinarily intelligent animals who also display culture.
The largest dolphin is the ‘Killer Whale’ and the most known dolphin is the 'Bottlenose' dolphin.
Dolphins can communicate through sounds and whistles.
Dolphins are altrustic animals. They are known to stay and help injured individuals, even helping them to the surface to breathe.
Dolphins use echo location to find food and navigate.
30
Environment Around
Test Your Wisdom 1.
Fill in the blanks. a.
____________ invented pendulum clock.
b. ___________ is the unit for measuring the frequency of sound. c.
Tomatoes are the richest source of ___________________ .
d. ____________ is the crust of the earth. e.
2.
____________ is the science of governing travel in space.
Encircle the correct option. a.
Ultrasonic sounds have frequency more than 10,000 Hz/20,000 Hz.
b. Dolphins are mammals/reptiles. c.
Howler Monkey/Gorilla is the loudest voice animal on land.
d. Butter/Yeast contains fat. e.
3.
Crow/Forest Owlet is an endangered bird of India.
State whether True or False. a.
Jelly fish is the largest brain animal as compared to its body.
b. Dirty Dozen were the engineers who developed IBM PC. c.
Rickets is a disease in which muscles become weak.
d. Histology is a science that deals with the study of structure of tissues. e.
4.
Jaggery is a rich source of iron.
Match the following: a.
Colour blindness
(i)
Roy Plunkett
b. Marmot
(ii) Mammal
c.
Oriental Stork
(iii)
Eyes
d.
Teflon
(iv)
Biggest rocket
e.
Saturn V
(v)
Endangered bird
31
Environment Around
5.
Unjumble the letters to find out the answers. a.
__________________
DOP is a group of dolphins.
b. Laws of electricity was given by DARFAAY c.
UCANUPCEURT is a Chinese medical practice involving insertion of thin needles into the body.
6.
__________________ __________________
d. phiaobvia is a fear of flying. e.
__________________
DDRANOI is a software package for smartphones, including many application programs.
__________________
Write the full form of the following abbreviations.
a.
C A M
______________________________________________
b.
G U I
______________________________________________
c.
I C T
______________________________________________
d.
U M T S
______________________________________________
e.
G S M
______________________________________________
7.
Given below are the pictures of some famous Indian scientists. Name them.
_______________ _______________
_______________
_______________
_______________ _______________
_______________
_______________
32
